Helical Preform Patents (Class 24/115N)
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Patent number: 5655269Abstract: An adjustable clamping device for receiving and selectively frictionally engaging an internally disposed inserted member, such as a rope or rod, is disclosed. The clamping device comprises a flexible and readily deformable gripping member of a hollow cylindrical shape, disposed about a generally centrally located first longitudinal axis. The gripping member may comprise a substantially solid sheet of flexible material, or may comprise a mesh material, or may comprise a plurality of flexible strand members. The material for the gripping member may be leather, rubber, synthetic rubber, neoprene, cloth, nylon, rayon, kevlar, or metal, as appropriate. The gripping member is twistably deformable between a straight neutral configuration and a plurality of helically twisted configurations whereat the gripping member reduces in diameter and encloses down onto the inserted member.Type: GrantFiled: August 7, 1995Date of Patent: August 12, 1997Assignee: Dyalem Concepts Inc.Inventor: Emil S. Sagalovich
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Patent number: 5526552Abstract: Cable end connection for a synthetic fiber cable.Type: GrantFiled: September 30, 1994Date of Patent: June 18, 1996Assignee: Inventio AGInventor: Claudio De Angelis
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Patent number: 5480203Abstract: A pulling tool for gripping a cable or cables, especially fragile cables such as fiber optic cables. The pulling tool can pull such fragile cables with or without fragile connectors coupled to their free ends. The pulling tool has a mesh sleeve with an open tail end for receiving the ends of the cables, and a closed lead end with a ring or pulling member coupled thereto. The sleeve is constructed of a plurality of thin, flexible strands tightly interwoven together to form a longitudinally compressible and laterally expandable tube. The strands are tightly interwoven to prevent the cables or connectors from protruding outwardly from the sleeve. The sleeve is also highly flexible to permit the sleeve to be folded or rolled up.Type: GrantFiled: January 18, 1994Date of Patent: January 2, 1996Assignee: Hubbell IncorporatedInventors: Mark L. Favalora, Randolph J. Minor
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Patent number: 4601507Abstract: A grip for pulling fiber optic cable having a wire mesh sleeve for engaging the outer jacket of the cable and a coupling assembly for engaging the strength member in the cable. The grip comprises a hollow member, a pulling eye at the lead end of the hollow member, a wire mesh sleeve at the tail end of the hollow member, and a coupling assembly attached to the hollow member. The hollow member forms a protective sheath supporting the coupling assembly therein. This coupling assembly can be a loop, a bore and a plug assembly or a plurality of set screws.Type: GrantFiled: April 1, 1985Date of Patent: July 22, 1986Assignee: Harvey Hubbell IncorporatedInventor: David E. Fallon
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Patent number: 4523355Abstract: A fitting for connecting an elongate body such as a cable (19) to a support having a mounting post (11) with a transverse hole (20) adjacent its free end, the fitting comprising a generally U-shaped component formed from a number of strands of wire twisted together, in an open helical formation. The central part of the fitting is twisted more closely, to resemble a wire rope, and is bent to form two-coaxial rings (18) disposed on one side of the plane of the fitting. The rings are joined by a transversally extending midportion (15), which is preferably semicircular in configuration and lies in a plane inclined to the plane of the legs (13, 14) of the fitting.Type: GrantFiled: June 14, 1983Date of Patent: June 18, 1985Assignee: Preformed Line Products CompanyInventor: Aristheu A. Rosa
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Patent number: 4514005Abstract: A grip for pulling fiber optic cable having a wire mesh sleeve for engaging the outer jacket of the cable and a coupling assembly for engaging the strength member in the cable. The grip comprises a hollow member, a pulling eye at the lead end of the hollow member, a wire mesh sleeve at the tail end of the hollow member, and a coupling assembly attached to the hollow member. The hollow member forms a protective sheath supporting the coupling assembly therein. This coupling assembly can be a loop, a bore and a plug assembly or a plurality of set screws.Type: GrantFiled: April 15, 1983Date of Patent: April 30, 1985Assignee: Harvey Hubbell IncorporatedInventor: David E. Fallon
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Patent number: 4509877Abstract: A strain relief for the point of attachment of a flexible member to a rigid member, comprising a plurality of woven braided strands. The weaving is close or narrow at the point of attachment and progressively more open or wide along the flexible member as the distance from the point of attachment increases, distributing stress along the length of the flexible member.Type: GrantFiled: November 9, 1983Date of Patent: April 9, 1985Inventors: Sidney S. Sobin, Daniel J. Netto
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Patent number: 4459722Abstract: A deadending device for guy cables and the like is provided which gives enhanced holding power (typically above the rated strength of the cable) while being relatively inexpensive to produce and easy to field install. The device includes a frustoconical, cable-receiving wedge block, preformed gripping wires for application to the cable and about the block, and a socket for receiving the block and surrounding wire portions. The gripping wires are permanently preformed during manufacturing using a novel method to present, adjacent one end thereof, an arcuate section configured to generally define a portion of an imaginary frustoconical surface complemental with the wedge block periphery. In this manner the wires substantially self-align in an even pattern about the block, and the need for wire-holding flanges or the like on the block or socket is completely eliminated.Type: GrantFiled: May 27, 1982Date of Patent: July 17, 1984Assignee: A. B. Chance Co.Inventors: Edward Dziedzic, Gary R. Dickerson, David P. Eppinger
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Patent number: 4453291Abstract: A grip for cable, especially fragile cable such as fiber optic cable having a fragile connector at one end thereof. The grip comprises an elongated, hollow protective sheath with an open rearward end for receiving the connector therein, a pulling device coupled at the forward end of the sheath by means of a forwardly tapered nose piece and an open mesh sleeve coupled at the rearward end of the sheath for engaging the cable upon a longitudinal stretching thereof which radially reduces the sleeve around the cable. The pulling device comprises a shaft journalled for free rotation on the nose piece by ball bearings mounted in the nose piece to allow the sheath to rotate about its longitudinal axis as it is being pulled.Type: GrantFiled: June 21, 1982Date of Patent: June 12, 1984Assignee: Harvey Hubbell IncorporatedInventor: Alfred W. Fidrych
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Patent number: 4439897Abstract: A dead-end appliance for linear bodies including a pair of elongated legs, each of which is helically coiled along the length thereof for grippingly receiving a portion of a linear body. An integral connecting portion connects the legs at one end thereof and includes integral pin receiving eyes and a bight portion. The eyes have eye axes lying in a plane extending perpendicular to the legs, and the bight portion is positioned for attachment of a linear body tensioning device thereto extending therefrom on the same side of the plane as the legs.Type: GrantFiled: December 22, 1981Date of Patent: April 3, 1984Assignee: Preformed Line Products CompanyInventor: Robert S. Kindel
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Patent number: 4395802Abstract: A bending strain relief assembly which includes a plurality of helical band members cooperatively interdigitated to define a sleeve having a cylindrical passage therethrough for receiving a cable or hose. Each band member includes a plurality of individual helical elements encapsulated together in synthetic plastic material. Each band member also has an external grip groove on one end portion thereof for receiving a clamping flange on a clamping head. Cooperation between the clamping flange and grip grooves prevents radial separation of the band members at the one end portion thereof and prevents relative longitudinal movement between the band members and the clamping head. A holding device is positioned around the band members adjacent the other end portions for preventing radial separation thereof.Type: GrantFiled: April 17, 1981Date of Patent: August 2, 1983Assignee: Preformed Line Products, Inc.Inventor: Frank Albert, Jr.
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Patent number: 4368910Abstract: A grip for pulling cable, especially fragile cable such as fiber optic cable. The grip can pull such fragile cable with or without a fragile connector at the end thereof. The grip comprises a rigid, hollow protective sheath with an open tail end for receiving the cable end therein, a pulling device coupled at the lead end of the sheath, and a braided open wire mesh sleeve coupled at the tail end of the sheath for engaging the cable upon a longitudinal stretching thereof which radially reduces the sleeve around the cable. The pulling device can be a flexible wire loop rotatably coupled to the protective sheath. The open wire mesh sleeve can be closed along its length, split along its length or both closed and split in the two sections along its length.Type: GrantFiled: December 8, 1980Date of Patent: January 18, 1983Assignee: Harvey Hubbell IncorporatedInventor: Alfred W. Fidrych
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Patent number: 4354705Abstract: An open-mesh woven wire cable grip for fitting over an end portion of a cable with a larger diameter discontinuity therein comprises at its leading end a tubular portion of `closed` form and, woven integrally therewith, a shorter tail portion of `split` form which may be closed by lacing or rodding.Type: GrantFiled: October 14, 1980Date of Patent: October 19, 1982Assignee: Harvey Hubbell IncorporatedInventors: Louis W. Shorey, Keith W. Hill, Alan R. Davis
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Patent number: 4293157Abstract: A cable grip adapted to enclose a cable and comprising a split sleeve of open meshed structure with two series of loops along the two free longitudinal edges and a flexible locking member having a central loop and two legs extending from that loop for interconnecting the interfingered series of loops. The central loop is received in two adjacent loops at one end of the two longitudinal edges, and the legs extend through each of the remaining interfingered loops and are coupled together at the other end of these edges. To form the closure for the split sleeve, the sleeve is first wrapped around the cable so that the two series of loops are interfingered except for two adjacent loops at the top end, a rigid pin is maneuvered through all but the two top loops, the flexible locking member is maneuvered through these top loops and secured to the pin, and the pin is withdrawn, pulling the locking member with it through the remaining loops. Then, the locking member is released from the pin and is fastened in place.Type: GrantFiled: October 22, 1979Date of Patent: October 6, 1981Assignee: Harvey Hubbell IncorporatedInventor: Alfred W. Fidrych
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Patent number: 4245839Abstract: A versatile exercise device designed particularly for running in place, against the restraining force of an anchored belt, includes a single piece of rope, one end of which is arranged for anchorage to a fixed object, and the other end of which is formed into an adjustable belt by a simple and convenient loop forming device.Type: GrantFiled: August 3, 1978Date of Patent: January 20, 1981Inventor: Stanley G. Trent
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Patent number: 4066368Abstract: An easily installable, high load capacity deadending apparatus for securing the end of lines such as guy cables and the like to anchoring structure is provided which includes a tapered wedge block in conjunction with a helically preformed line tie adapted to grip the line and preferably extend around and engage the remote end of the wedge block for securing the latter against substantial axial movement; a socket casting having a complementally tapered bore is applied over the wedge block and line tie thereround to complete the apparatus and permit connection thereof to an earth anchor or like device so that the socket and block are biased together in mutual gripping interengagement. In practice, as the line experiences increasing tension loads, the wedge block and socket are pulled into tight interengagement which in turn causes a tighter grip of the line and increases the overall holding power of the deadending apparatus.Type: GrantFiled: August 5, 1975Date of Patent: January 3, 1978Assignee: A. B. Chance CompanyInventors: Henry N. Mastalski, James P. Lucas, Edward Dziedzic, David P. Eppinger
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Patent number: 4055875Abstract: A cable gripping device which is readily adjustable and fail-safe. The device includes cylindrical inner and outer housings in telescoped relationship which contain an inner gripper member and an outer compression spring connected to the housings. When the housings are biased apart by the compression spring, the gripper member is forced into tight contact with a rope or cable passing axially through the housings, locking the assembly in position on the cable. If the housings are moved toward each other, the compression spring is compressed and the gripper member is loosened, allowing the assembly to be moved along the cable. If the operator releases the housings, such as by slipping and falling, the compression spring automatically moves the housings apart, causing the gripper to again grip the cable. This device is especially suitable for use by workers in high locations, since they can move about along a safety cable without unhooking their safety lanyards from the cable.Type: GrantFiled: May 24, 1976Date of Patent: November 1, 1977Assignee: General Dynamics CorporationInventor: Frederick W. Strickland
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Patent number: 4023835Abstract: Lengths of "plain-end" pipe are joined together in underground sewer or drainage systems by flexible sleeves having a specified column expansibility and shear-resistance and containing high modulus helically oriented reinforcement, bonded or encapsulated in elastomeric material. The resultant pipe assemblies represent a significant improvement over previously known "plain-end" pipe-coupling arrangements and bell and spigot pipe assemblies. Pipe sections may be quickly and economically joined without inserting packing, to provide a water-tight, shear-resistant joint which will accomodate significant angular misalignment and circumferential variation. Even if lubricant is placed on the inner surfaces of the flexible sleeves to reduce assembly forces, the resultant pipe assemblies still exhibit more than adequate resistance against shear loads and water infiltration.Type: GrantFiled: May 2, 1975Date of Patent: May 17, 1977Assignee: Ewing Engineering CompanyInventors: Lloyd Ewing, Michael J. Bykowski
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Patent number: 4023834Abstract: Lengths of pipe are joined together in above- or below-ground telephone conduit systems by flexible sleeves having specified coefficient of friction, column expansibility and pull-out resistance and containing helically oriented high modulus reinforcement, bonded or encapsulated in elastomeric material. The resultant pipe assemblies represent a significant improvement over previously known cemented conduit-coupling arrangements. Pipe sections may be quickly and economically joined without field application of adhesive, to provide water-tight, pull-out-resistant joints which will accomodate significant bending moments and shearing forces.Type: GrantFiled: May 2, 1975Date of Patent: May 17, 1977Assignee: Ewing Engineering CompanyInventors: Lloyd Ewing, Michael J. Bykowski
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Patent number: 3999253Abstract: A cable grip including an equalizer of plural coil construction with the coils each closely wound and spaced apart longitudinally, and receiving strand pairs of the grip. The equalizer is formed from circular section wire, and adjacent coils are spaced apart by integral wire portions in the form of a long pitch helix of about one turn. The wire construction facilitates inspection of the strands, eliminates sharp edges, and permits lateral movement of the coils with respect to each other.Type: GrantFiled: May 12, 1975Date of Patent: December 28, 1976Assignee: Harvey Hubbell IncorporatedInventor: John Richard Hoadley